Video recording method and apparatus thereof

Abstract

Embodiments of the invention, which relate to the video recording field, disclose a video recording method and an apparatus thereof. Under the condition of guaranteeing video recording qualities, recording video contents at any time without increasing computation and peripherals can be realized. The method of the embodiments in the invention comprises the following steps: acquiring a reconstructed image of a video frame which is corresponding to a selected moment according to a coding mode of a video stream on a coding terminal or a decoding terminal when a current video is needed to be recorded, wherein the selected moment is the moment of recording the current video stream; performing a lossless compression coding to the reconstructed image so as to obtain the lossless-compression-codedvideo stream and then storing the lossless-compression-coded video stream into a recording memory; directly storing the video stream which is corresponding to a subsequent image of the reconstructed image into the recording memory. The embodiments of the invention can be mainly used during a video recording process, especially an on-line video recording process.

Description

technical field [0001] The invention relates to the field of video recording and broadcasting, in particular to a video recording method and device. Background technique [0002] In the current mainstream video compression coding standards, in order to improve the compression rate, the coding method of inter-frame prediction is adopted, that is, the following image frame uses the previous image frame as the prediction frame, and then the predicted residual value is encoded. Such pictures are called inter pictures. In the actual encoding process, there are also some images that do not refer to other frame images, but are only predictively encoded within the frame, such as the encoded image of the first frame, and such images are called intra-frame images. It is also possible to randomly insert some intra-pictures during encoding as needed. Due to the dependence of inter pictures on previous predicted pictures, all predicted pictures must be decoded before decoding inter pic...

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the above-mentioned video recording, when using the method of regularly inserting some intra-frame encoded images at the encoding end to realize the recording of video content from any moment, due to the low compression rate of the intra-frame images and changing the encoding Therefore, the video recording process will affect the actual video effect; when using the method of adding a camera at the image output end to realize the recording of video content from any moment, the peripheral equipment is added, and Due to the need to re-encode the reconstructed image, the computational complexity is greatly increased, and the quality of the recorded image is greatly reduced due to the compression of the encoding process.

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